Biomass Pellets Combustion for Asphalt Drier Drum Heating
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Solution Overview
Problem
Current asphalt production methods rely on fossil fuels for heating, leading to high carbon dioxide emissions and inconsistent temperatures in the drier drum, which are detrimental to the environment and working conditions.
Innovation Solution
An asphalt production arrangement using a pellets combustion device that burns wood or biomass to heat the drier drum, ensuring consistent temperature through precise regulation of pulverized pellets, reducing environmental impact and carbon emissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a burner running on heavy oil, diesel, coal or propane gas is used as heat source, then the drier can heat the aggregate to required temperature, but it causes high carbon dioxide emissions and is harmful to the environment
Solution Approach 1:
The invention changes the fuel parameter from fossil fuels (heavy oil, diesel, coal, propane gas) to biomass-based fuel (wood chips, bark, straw, husks). This parameter change maintains the heating capability while eliminating carbon dioxide emissions, as the biomass fuel is carbon-neutral when sustainably sourced.
Solution Approach 2:
The invention uses readily available biomass materials (wood chips, bark, straw, husks) as fuel sources. These are abundant, renewable resources that can be sustainably replenished, replacing finite fossil fuels with renewable short-living organic materials that leave minimal environmental harm.
2Duration of action of stationary object
If a traditional burner is used as heat source, then the drier can operate continuously, but the temperature in the drier is inconsistent over time
Solution Approach 1:
The invention incorporates a control system that monitors the temperature in the drier and adjusts the fuel feed rate accordingly. When temperature drops, the system increases fuel supply; when temperature is sufficient, it reduces fuel supply. This feedback mechanism ensures consistent temperature during continuous operation while optimizing fuel consumption.
Solution Approach 2:
The invention transitions from static fuel feeding to dynamic fuel feeding, where the fuel supply rate continuously adjusts based on real-time temperature conditions. This dynamic adaptation allows the system to maintain stable temperature despite continuous operation and varying load conditions.
3Productivity
If fossil fuels are burned for heating, then the asphalt production process can be maintained, but it creates undesirable environmental consequences and poor working conditions
Solution Approach 1:
The invention changes the fuel type parameter from polluting fossil fuels to clean biomass fuel. This substitution maintains full productivity of asphalt production while eliminating harmful emissions, improving both environmental impact and working conditions for operators.
Solution Approach 2:
The invention converts agricultural and forestry waste materials (wood chips, bark, straw, husks) that would otherwise be discarded or burned openly into a controlled, efficient fuel source. This transforms potential environmental hazards into a beneficial renewable energy resource that powers asphalt production cleanly.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method provides a more environmentally friendly and efficient heating solution for asphalt production, maintaining consistent temperatures and reducing carbon footprint by utilizing renewable biomass energy sources.
Implementation Method 1
The heat source comprises a pellets combustion device adapted to burn wood or biomass, or pellets, or pulverized pellets, of wood or biomass in order to generate the heat
Data Source
Figure 1~2
Figure 3
AI summary
The present invention relates to an asphalt production arrangement (1) for preparation of an asphalt mixture. The arrangement (1) comprises a hollow drier drum (2), adapted to hold an aggregate for an asphalt mixture, and a heat source (3) arranged in connection with said drier drum (2). The heat source (3) is adapted to heat said drier drum (2), such that said aggregate is heated to a desired temperature. The heat source (3) comprises a pellets combustion device (4) adapted to bum wood or biomass, or pellets, or pulverized pellets of wood or biomass in order to generate said heat. The present invention further relates to a method for heating a drier drum (2) in such an asphalt production arrangement (1).